Improvement in augers



B. FDRSTNER.

Angers.

Patented Sept. 22,1874.

No.l55,l 48.

mvmmhs WITNESSES; Z

Affy

UNITED STATES PATENT OFFICE.

I BENJAMIN FORSTNER, OF SALEM, ASSIGNOR OF ONE-HALF HIS RIGHT TO- EDGAR0. SMITH, OF ALBANY, OREGON.

IMPROVEMENT IN AUGERS.

Specification forming part of Letters Patent No. 155,148, datedSeptember 22, 1874; application filed August To all whom it may concern:

Be it known that I, BENJAMIN FORSTNER, of the city of Salem, in thecounty of Marion, in the State of Oregon, hzwe invented a new and usefulImprovement on an Auger for Boring Holes in Wood; and I do herebydeclare that the following is a full, clear, and exact description ofthe construction and operation of the same, reference being had to theannexed drawings, which are made a part of these specifications.

This invention consists in providing the cuttin g part of an anger orbit with a circular cutting band or flange,in connection with a suitablecutting-lip, the band and lip being located nearly in the samehorizontal plane, as will be fully described hereinafter.

In the drawings, Figures 1 and 4 represent views of side elevations ofmy invention; Figs. 2 and 6, sectional elevations, and Figs. 3 and 5plan views.

To enable others skilled in the art to make and use my invention, I willnow proceed to describe fully its construction and manner of operation.

4 represents a circular band or flange, provided with a cutting-edge, asshown; and a, a cutting-lip of any suitable construction, the

[ cutting-edges of each being located on nearly the same horizontalplane as shown. The advantages of this peculiar construction are verymarked. The circular band serves to guide the bit accurately in itsmovement, and also give the hole that is bored a smooth and perfectfinish.

By its employment the gimlet-point may be dispensed with, and as thecutting-lips do not project beyond its horizontal plane, it follows thatthe wood is not out beyond the line operated upon by the circularcutting-edge of the band.

By means of this peculiar construction, also, there is no tendency tosplit the wood or to follow the grain.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

The auger having the circular cutting-band and cutting-lip located innearly the same horizontal plane, as and. for the purpose described.

BENJAMIN FORSTNER. [L. s]

Witnesses:

D. H. MURPHY,

RUFUS MALLON.

